What Are Some Common Issues with the Ford S-Max Hybrid Engine?

I just purchased a Ford S-Max Hybrid, is there any common issues I should be aware of with the engine?

The most common issue with the Ford S-Max Hybrid engine is a lack of acceleration and power compared to traditional gas engines.

Another common issue is a decrease in fuel efficiency over time, resulting in higher gas costs.

Some drivers have also reported a strange knocking noise coming from the engine while driving at high speeds on the highway.